Spatial correlation of pairing modes in nuclei at finite temperature.

We study the effect of the temperature on the spatial correlations between two nucleons, induced by the pairing interaction. Both the Cooper pairs of superfluid nuclei as well as the low-lying pairing vibrations of the normal systems are strongly affected by temperatures of the order of the pairing gap, in keeping with the close origin existing between the two modes of excitation. Giant pairing vibrations, namely the zero sound of nuclei associated with the change of particle number in two, predicted to exist in both normal and superfluid systems, are not affected by temperature.